Metal-working machine.



Patented July 8, 1909.

7 BIEBTHBBBT 1.

om N nu EN Ow www l, Hm. Nm.

B. R. SEWAED.

METAL WORKING MAGHIN n.

rrmonxon msn AUG. n1, 1m.

927,432. Panmd July 6, 1909.

E. R. SEWARD.

METAL WORKING MACHINE.

armonica rxLmJ AUG, a7. 1904.

Patented July 6, 1909. 1 sums-snm a.

W201-nefs' In 11e/atar. E 'ewam;

w .mg

E. R. SBWARD. METAL wonmre Mmmm APFLIUATIOI FILED AUG. 27, 1904.

Patented July 6, 1909.

7 SHEETS-SHEET 4.

In venor s E'. RAS'ewarcZ, 3y d? #ttor/veis' f//Arl E. n. SBWARD. METAL WORKING MACHINE.

APPLICATION FILED AUG. 27. 1904.

Patented July 6, 1909.

7 BHEBTB-BHBBT 5.

k S 3 l hh w f a s \^6 @i m6 ,M\ o i l 3, $9.33 o m2 Q @o bw M E. B.. SEWARD.

METAL WGBKING MAUB'INE.

nunmal rvILnn ma. 21. 1m.

Patented July 6, 1909.

T BBBBTB--BHEET 6.

uTlN- OFF TQQL ma MAIN SPINDLE TOOL SPINDLE SLI SWE, TOOLS -PGINTING 7o @ENTER BES,

n, R. s'BwAnD. METAL WORKING IPLIUATIUI I'ILIED AUG. 27. 1904.

927,432. Patented- July 1909;

'l SHEETS-BREST 7..

Mle-wwf Jwmr.' Q4 f E R. Seward, @up y By Frzls'vornefy UNITED STATES PATENT oEEIoE.

ERNEST R. SEWARD, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE HARTFORD MACH INE SCREW COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

METAL-WORKING MACHINE.

Specification o! Letters Patent. y Application ledAugust 27, 1904. Serial No. $22,410.

Patented July 6, 1909.

a particular purpose, namely, that of formin parts, although o set screws or similar course the device is not atall llimited to such pu oses. The o eration of the machine wit in described for convenience.

` The object of the invention is to provide an automatic machine of simple construction which will operate with great. precision in the working of metals for various purposes.

:A further object is to provide a machine in which the speeds of the various parts of the mechanisms may be varied at predetermined inst-ants to provide very rapid operation.

A still further ob'ect is to provide a ositive o erating mec anism for each o the severa sets olv mechanism which together comprise the machine. f

A still further object is to provide a center rest forthe material operated u on which will automatically open j at pre etermined inst-ants to permit the passage of the stock finished or partially finished 4through the rest.

arrangement by which a turret head is entirely dispensed with, and the several tools for operating upon the stock are brought into position by rectilineal movements.

An important feature resides in the combining of several operating tools so arranged as to do their work simultaneously upon the stock withoutinterfering one with the other, and a novel and important feature of-the machine is providing an arrangement by 'other machinery.

reference to orming. a set screw is here l ollowing. figures. Fig.

.view on the line 9 One important feature of the device'is an showing the cam gate an and comprisin which positive drives may be 'secured both to the main shaft and throughout the ma'- chinc at the same time, permitting an angular disposition of the machineV with reference to the countershaft, which will preclude the possibility of interference of the stock with `Provision is also made for frictionaily driving certain portions of the mechanism lto preclude the possibility of breaka e. One feature of the machine is the arrangelment by which the feed slides -are moved through a comparatively long distance with a comparatively short movement of the operating mechanism therefor.

Referring to the drawings-Figure 1 is` a Elan view of the machine, the tool holders eing shown without tools. Fig 2 is a general view in elevation of the parte shown in Fig. l, portions being romitted for the sake of clearness'. Fig. 3Mis a longitudinal sectional view through the spindle and appurtenant arts, on enlarged scale, 'as are all of the 4 is an end view taken from the -left of Fig. 3 with the arts broken'awa Fig. 5 is a longitudine section on the "ne a of Fig. 6. Fig. 6 is a cross sectional view adjacent to the center rest showing the center ,rest slides and appurtenant parts, on lineb of Fig. 5. Fig. 7 is a partial plan view of the center rest and tool slides with arts broken away to show construction. `g. 8 is a llongitudinal section view through one of the tool spindles and appurtenant parts. 9,-is a cross sectional of ig. 8 taken through the tools indles and rest. Fig. 10 is a cross sectiona view on the line 10 of F' 8. Fig. 11 is a cross sectional view ont e line 11v` of Fig. 8, looking toward the adjaeentend of the machine. Fig. 12 is a detail plan view d forward end of the Fig'. 'I3-is a deo efratin' indle and sllde.

P g sl) h the tail view inA longitudinal section throu parts shown atthe extrememilght of tlfe fast Tan slow speed mechanism. 1' 14 is 'a view of the arts shown in Fig. 13 ooking from the right o said figure and 1taken in sec tion along the variable Vto speed shaft. Fig. 15 is a' partial horizontal section view through the feed shaft cross shaft and connections for the variable speed mechanism. Fig. 16 is a sectional view on the line 16 of Fig. 14. Fig. 17 shows a chart or diagram defining the cycle of operation of the various parts of the mechanism. Fig. 18 is an enlarged view showing the stock as operated upon bythe tools, with the center rest open to permit passage ofthe stock. Fig. 19 is a view of the stock withI the center rest closed and the cutting tools cuttinf*v forward to size the stock. Fig. 20 shows the tools as they are fed axially of the stock, with the screw cutting diesat the end of their operation. Fig. 21 illustrates the stock and position of the tools as the cutting oil' tool severs the finished article.

As already definedz one of the principal objects of the machine is to produce an auto-V matic mechanism for performing various operations as nearly as possible by simultaneous action upon a single piece of stock, and t e machine as herein described illustrates i s adaptation for automatically forming set screws or cap screws.

In the accompanying drawings the numeral 1 denotes t e base or support rovided with suitable bearings for a cam sh t 2 and a feed shaft 3 and cross shaft 4. Upon this base or supfport are mounted the several driving parts or the main spindle and the turning and cutting off toolsas Well as the tool head which bears the tool spindles and tools for performing certain operations upon the stock.

Upon the left of the base, as viewed in Figs. 1 and 2i is suppgrted the main spindle 5 with its ^driving ft 6 and appurtenant parts, which are carried in uprights 7-"8 provided vwith requisite bearings for said shafts. Upon the ea or heads of the uprights 7-8 there is isposed a sup ort 9 provided at its forward end with a sli e-way 10'of angular form arranged to receive the center rest su port 11, the latter being se#- cured in any esiredposition of adjustment bv clamp screws l2. The :nain spindle 5 is of sectional -form including several concentric members, and upon the outer tube member's are a bevel gears 13-14 of the same diameter and number of teeth which mesh with `rs 15-16 secured to t e main driving sha 6. Bevel gears are between the shaft 6 and the main spindle 5 and itzwill be noted that the shaft and spindle 5 are angularly disposedin order to permit an angular disposition of the machine with reference to a counter shaft. This brings the maindriving shaft 6 into a position arallel with the counter shaft .whereby a ain or positive 've may be' used between a sprocketon the counter shaft and a s rocket wheel 17 upon the'main driving s a'ft 6. With this arrangement the stock of onePinef chine will not interfere with other machines, though they are located below and operated from the same counter shaft. Both the gears 13-14 are loosely mounted upon the outer tube of the s indi-e 5 upon suitable bearings, and the adiacent faces of each of these gears are provided with clutch members 18-19 preferably of the tooth form. Either one or the other of these is engaged by an axially shifting clutch 20 having a clutch surface upon each end and controlled by a clutch lever 2l provided with a roll 22 and acted upon by cams suitably arranged u on the cam disk 23 secured to the cam sha t 2. This cam lever 21 is pivoted as at 24 to the frame of the machine and hasQ a yoke 25 which encircles the clutch member 2() to shift it. Secured to the yoke is a cam 26 coperating with a spring 27 having a cam face at its outerl end. The function of this spring is to give a uick and positive movement to the clutch 20 or shifting it into and out of posi-4 from the gear 14 to the gear 13 by ordinary meansl of a cam and without lost motion and the spring disengagement of the clutch meinber 19 would ta e place prior to the engagement of the clutch mem er 18, the driving shaft would for an instant fail to transmit motion to the spinlle and connected parts. By iis' the cam 2 and spring with the lost motion escribed, the change from one clutch position to the other is so rapid as to preclude the possibility of retarding movement of thel rotatingparts. Within the outer tube of the main spindle 5 is a chucking tube 28 having at one end chuck 'aws 29 and at its reaend shoulders 30 whic are engaged by chuckinv levers 31 pivoted to a collar 32 and lactuated by a cam 33, which iii turn is connected with a slide 34 arranged to be reciprocated by suit# able cams upon -a cam disk, 35 through 'the medium of a roll 36.

Within the chucking tube 28 is a feed tube 37 provided with stop collars 38--39 between which there is arra d afprojegtion 40 from the feed slide 41. his feed shde is reciprocated by suitable cams upon. the cam disk 35 thm h the medium of a roll 42. Both the chuc 'ng slide 34 and feed slide 41 are mounted upon the sameslide-way 43, which extends to a considerable distance and bears the several parts of a stop mchanism. hereinafter described. The feed tube 37 at its forward end is split 4to provide -a` frietional grasp u'pon the stock, and this has an im rtant function with respectV to theico 'esigua Keved to-the main spindle 5 is a sprocket wheel or drum 44 which through a chain indicated in dotted outline as at 45', Fig. 3,

shaft 3. This feed shaft leirtends forward through suitable bearings in in a bevel gear 46 which meshes with a bevel ear 47 upon the aft 4 has keyed` a sleeve 48 with an'upwardly exilange 49, which coperating with a fricspur gear 52. This gear 52 is loosely mounted on the sleeve ar and disks 49-50 are padded with a resi 'ent ma- The sleeve` 51 is adjust` able axially of the sleeve 48 and thus the be increased or dedrives the feed the base and. terminates cross shaft 4. This cross s upon it tending y Hangs 50 upon a sleeve 5-1 provides a tional grasp for holding a 48 and the adjacent faces of the terial, as leather.

amount of friction may creased.

carrying sun and planet gears, which vide a variable speed for the shaft 55.- variablespeed may with a and the by a clutch member 63 for high speed drive on the sha 1 t is ward movement and eompellin The shaft 55- is l which meshes wi effected from the main end a cam disk 68, which throng quently t speed mechanism. 1This fast and slow speed mechanism is shewn in detail in lfigs. 14 to 16 inclusive. It, is to be noted reduction between the gears 13-14 of the spindle, and as the clutc 20 is shifted to engage either the gear 13 or e main spindle the speed of said spindle is varied, and these variations indle are transmitted with a corresponding speed on the cam shaft, although, of course, the speed of 1the cam shaft is independently varied by the i. fast and slow speed motion just above des'scribed. f y

the gear 14 with t `in the speed of the s through the feed sha t increase and decrease of The gear 52 meshes with and drives a gear 53 which is secured to a drum or spider 54 ro his be of any desired type, but as shown herein there is 'a gear 56 keyed tothe shaft 55 and a shaft 57 bears at either end gears 58--59 which mesh respectively" gear 60 fast on thev ratchet sleeve 61 Gear 56 fast on the shaft 55. The drum 54 lhears a clutch 62 which is engaged rovidinv the t 55. When clutch is in the position shown in Figs.

4 and 15 the low speed drive is secured, the pawl 64 holding the ratchet 65 against back-v a forward drive at slow speed through t e gear 56. plrovided with a Worm 66 tV a worm wheel 67 mounted upon thecam shaft 2. Thus adrivo is spindle to the cam" shaft through the fast and slow motion just described. and used for purposes hereinafter set forth. The cam shaft 2 has at its outer h suitable cams operates alever 69 that controls the shifting of the clutch member 68 and consehe operatiouof the fast and slow that there is a different l gears 15-16 of the main drive shaft and their respective mating At the opposite end of the base 1 from the y spindle are arranged the tooll slides and spindles. As shown herein, there are two tool spindles 70-71.both borne in a housing or bearing 72 so arranged that they may be reciprocated independently of and ma be shifted transversely f the vinachine with the housing 72. This yhousing 72 praetieall forms duplex bearings yfor the tool spin es 70-71 and each of these spindles at its under side is provided `with a rack spur gear 75 as they are shifted transversely into position to engage said gear.

' The housin 72 is mounted in a transverse slide 76 wor 'ng in slide-Ways 77, and a spring-pressed locking-bolt 78 1s arranged to engage lock bolt recesses 79-80 to insure pro er positioning and holding of the slide 76 an contained tool s indles in either one of the two positions. t is locking bolt is withdrawn by cams 81 arranged upon the cam .disk 82 secured to the cam shaft 2. The iinder side of the slide 76 bears a rack 83 which meshes with a segmental. rack '84 pivoted to a dependent portion 85 ofthe frame and Vbearing concentric with its pivotal point 4a segmental gear 86. This gear in turn meshes with a segmental gear 87 and both the gear segments 86-87 are provided with 'extend- 'ing levers 88-89 so disposed as to be englo ed 'by cams 90A-91 secured to the cam is 82. It is obvious that the cams 9(1-91 will upon en agement with the levers 88-89 reverse the ection of movement of these mental rack lever 84 and .thus shift the sli e 76 with the housing and tool spindles transverselyof the mach'm and across the center line o the main spin le 5. Just time the cam 90 or 91 shifts the slide 76 theloeking bolt 78 is withdrawn b the cam 81 and during the movement of t A e slide is released to engage the proper index opening through 79 or 80.

Aunique arrangement is provided for securingan l feed of the tool spindles 70-7 1. vEach of ythese spindles at its und-er side as above-stated is provided with a rack 7 3-74 which meshes with a pinion 75. rilhis pinion isborne in a bracket 92 formed on a slide 93 and meshes with a rack 94 secured to the frame of the machine. The slide l93 through a roll 95 is moved at predetermined instants vby suitable cams upon the cam drum 96 secured to the cam shaft 2. It will thus be Aseen that a reeiprocation of the slide `93 will cause a rotation of the pinion 75 owing to its being in mesh with the stationary rack 94 and thus a double ount of movement will be transmitted to t e tool's racks each other 73-74 which engages and meshes with ay indles through the inter-engagement of t eir respective ment with the pinion 75 ajcam bar 97 is arbefore the To'insure the .rack teeth of the spindles beproper alinefnent to slide into engage'- too registering the slides and jaws.

ranged at the forward end of the frame and provided with cam surfaces 98. Each of the tool spindles is provided with a pin 99 arra e to engage the cam bar to position the spindle positively and bring its -rack teeth into proper alinement to be slid into mesh with the gear 75. A cam gate 100 is arranged in the cam bar 97 to rmit the forward movement of either Olm the s indles when they are in proper osition and eld by the locking bolt 78 whic has entered one of the indexing openings 79 or 80. It will thus be seen that the tool spindles are reciprocated in an axial direction b the movement of the slide 93 and are movedy transversely b the slide 76. When either of the spindles 1s retracted if it should fail to come into exact osition vwith its rack alined to slide into t e ear 75 the transverse movement of the sli e 76 through the coperation of tllpins 99, cam surfaces 98, and cam bar 97, bring said spindlewith its rack into positive alinement.

Having now described the main s indle which carries the stock and the tool spindles oppositely disposed thereto, one of the most essential garts of the machine will be described. his consists of the center rest turning and cutting off tools. The su port 9 is securely fastened to the tops of tlib supports 7-8 and extends forward overlying the inner end of the spindle 5 and chuck for holding the stock to be turned. At the under side and forward end of this su port 9 is arranged an angularly formed slidl-Way 10 upon which the center rest sup ort 11 may be slid to any desired position ofxiidjustment, it being provided 'with a .slide-way 101. Clam screws 12 extend through the slpport 11, w ich being split at its upper en 'provides a clam for securing it afterkadjustment along the slide-way of the support 9. This support 11 of the center rest is entirely dependent from the supporting member 9, and thus the lower part of the machine bed may be left open and clear to allow the passage of chips and cuttin and the center rest itself ma be adjus independently of any of the ot 1er mechanism. Arranged in suitable guide-ways 102 is a pair of slides 103-104 which at their adjacent ends are provided with jaws 1054106. The slides 103-104 are each lprovided at their outer ends with adjustable 108, which are slotted and provided with set screws 109 for securing any desired throw of Each of these blocks has a toothed rack formed on its lower edge and segmental levers 110-111 which intermesh therewith. For securin a direct adjustment of the rack blocks wit 1 reference t0 the slides adjusting screws 112-113 are pro- Y vided. These bear against the ends of the 109 the adjusting bolts 112-113 maybe slides and by loosening the binding screws l moved to secure the hecessary direct adjustment.

Positioned between the center rest support and the chuck of the spindle 5 is a tool post l114 `which as shown herein carries two cuttin tools, one arranged on either side thereo as at 115`-116. This tool post 114 is provided with a clamp stud 117 projecting into a slot or recess 118 in a slide 119. This slide is bornel in slide-ways 120 extending arallel with the axis of the spindle and ormed in a slide-block 121 which 1s arranged to have a movemen transverse to that of the slide 119. f

On the lower side of the slide 119 is 4arranged a rack 122 and this pinion 123 mounted on a suitable bearing 124 in the machine frame. The inion `123 also meshes with aV rack 125 forme on a slide 126, and is of a considerable wid th in order to permit a movement of the rack 122 across the pinion without disengagement of the teeth.

he slide 126 is provided with a roll 127 and suitable cams upon a cam disk 128 move the slide 126 and. rack 125 at predetermined moments.

In lieu of the arrangement above described for permitting a double movement of the tool post the slide 126 may be directly connected to the slide 119 without the interposition of racks Vand l pinions. Another'arrangement contem lated is tb mount the pinion 123 in the s ide 121 with its bearing` 124 secured to the slide 121 and arranged to slide through the pinion. The pinionm this case is stationary with respect to the rack- 125 and the rack- 122, while the bearing 124 slides `with reference to the inion 123. It will thus be seen that the s ide 119 which bears the tool post 114 may be moved axially of the work carried 'in the chuck of the spindle 5. To secure a transverse movement of the tool post .and tools the slide 121 is borne in suitable slide-ways 129 formed transversely to the slide-ways 120. On the under side of the slide 121 and in a recess 130 there is an adjustable rack 131 arranged to .be secured in anydesired position of adustment b a clamp nut 132. Intermes ing with this rack 131 is a segmental rack lever 133 pivoted to the frame as at 134 and at its lower end arranged to be engaged bv suitable cams .carried upon the cam disk 135. Through this means the slide 121 is reciprocated and carries with it the tool postV 114 and contained tools. This movement is for the pu ose of feeding the tools forward to secure t e proper size cut. After they have been fedforward.y and reduced the stock to the required diameter the slide 126 is moved i by its cam and the tools are fedalong the stock to the required distance to `give the roper cut. The action of these tools is hereinafter more fully described. V Along the top side of the slide-block 121 is use arranged a hardened cam block 136. Both this cam block andthe slide are of a considerable length, and the block itself underlies the lower end 137 of the segmental rack lever 110. The block 136 is provided with a cam face 13S-and has a horizontal surface 139.at its u permost edge. As the side 121 is forcer outward the end 137 of the lever 110 rides down the cam face 138 and a s ring 140 forces the center rest slittel 103 ackward away from the stock. The o posite` center rest slide 104 is operated in t e same manner, as hereinafter described.

A cutting olf tool 141 is carried in a tool block 142 which through a clamp bolt `143 is 'secured in any position of adjustment along the tool slide 144. This tool slide, as in the case of the slide 121, is provided with a recess 145 Within which is adjustabl secured a rack block 146, this rack being he d in its various positions of adjustment by a locking bolt 147. The rack 146 is en aged by a 'se ental rack lever 148 pivote as at 149 an with l its lower end arra ed tobeengaged by a cam upon the cam isk 135.

Upon the u per surface of the tool slide 144 1s a cam b ock 150 ha a cam surface 151 and an upper horizontal ace 152. This cam block 150 is substantially the same as the cam block 136 and controls the movement of the rack lever 111 and conse uently the movement of the center rest sli e 104. This slide is also provided with a spring 153 which retracts sald slide as the lower end of the lever l 1 1 rides down the cam face 151 VrAsthe center rest su port with its slides, operating levers there or and appurtenant parts, is hung and entirely su' ported from the member 9 it is apparent'th' ments of the center rest slide are controlled entirely by the cam blocks 136 and 150, and

- the retracting springs 140 and 153. As the cam blocks 136 and 150 are provided with inclined surfaces 138 and 151 and have plain, horizontal surfaces at their upper faces, after these cams have operated to throw the levers 1 10-111 in continued movement of the slides 121 and 144, they will not affect in any 'wa the position of the center rest slides. This is essential in order to provide a ro r y movement for the tools which are ca m tool posts mounted upon thetool post slides.l So far as known, this-arrangement of tools combined with an o ning center rest is a feature heretofore un own and the im ort of it is apparent.' AFor instance, as. ustrated in the accompari ing drawin ,Figs 18 to 21, the necessity or such a Levice is illustrated. The machine as here illustrated is arranged for automaticall forming Yset screws from square stock. T is stock is of course fedgforward Aby the feed tube through the chuck of thespindle 5 the roper distance. -The timing of the cams on tlliecam disk 135 is such that they act upon the levers 133 and at the move- 148, ca ing the tool slides 121 andy 144 toward eac other and thus through the cam blocks 136 and 150. The center rest slides 105-106 are forced against the stock which has been turnedv to round cross section by the tools 115-116. As illustrated in Fig. 18 the center rest slides are shown open. En Fig. 19the slides are shown closed, with the jaws about the stock. l

During the movement of the center rest slides the slide 121 moves forward with its tools 1 15-116 and the movement of the slide 121` is continued until said tools have cut their way into the stock the required distance to give the proper size as to diameter. While these tools are sizing the stock a pointing toolcarried .on the spindle at the opposite end of the machine is moved forward by the-cams on the cam drum 96 through the medium of the pinion and rack 73 to form s point on the end of the stock, as illustrated at 154, Fig. 19.

As soon as the pointing tool has performed its work it is retracted and the slide 76 is shifted by the cam drum 82 and its cams operate upon the segmental lever 84 and the locking bolt 78 of segmental gears 86--87 course being first withdrawn by the cam 81.

During this size cutting by the tools 1 15-116 and the pointin of the point by the pointi tool carried on ie tools indie 70, the clutc 1 20 has been in mesh wit the clutch member 19 onthe gear 14. The spindle 5 has thus been running on the hi speed, and of course the feed shaft 3 am cross shaft 4 have been running on proportionately high speed. The change speed mechanism between the cross shaft and the cam shaft, however, has been running on the low speed and thus the cam shafthas been running at a comparatively slow s eed. As soon as the pointinu tool spindle as been retracted and-the loc bolt 78 withdrawn, the cam 68 of the fast and slow speed mechanism shifts the lever 69, throwing in the hi h speed of the change s eed mechanism, t us s eedin up the cam s ft to secure a quick s ift o the slide 76 and tool spindles 70-71 carried therein.

As soon as the slide with the spindles 70-7 l has been shifted: to bring the s indle 71 into position for action, the cam o the cam disk 68 again shifts the lever 69 throwing on the low speed of the changespeed mechanism and provides einem aratively slow movement of the camsha 2. At the same in stant the clutchvaihasbeen shifted b the cams of the cam-,dislgZlthrowing said c utch into engagement `withthe clutch member 18 on the gear 13,givingga slow speed on the main spindle andstock which is beingturned.

4The s ndle 71 bears an automatic o ening 'and c osing diev 155, as illustratedv m ig. 8.

Thisdie is now moved forward with the tool spindle 71 through the action of its rack 74 cl-perating with the pinion 75,` rack .44 and cams onthecamdrurn 96 and and as En rated [cu a threaduponthe stock t e slide 126 and partscarriedthereby.

' When the thread cuttindieh'as moved forward a predetermined tance its jaws are released and with its spindle 71 it" is retracted.

- At or about the time the jaws of the die opened the cam disk 23 thr'ou h its cams s ifts the lever 21 and throws t e clutch 20 into engagement with the clutch member 19 of the gear 14. The m spindle 5 with its stock is thus run at and the cutting of the tools 1,15-116 along the stock is completed on this speed. this last cutting on the high speedl the cutting oi tool 141 has been moved orward by a movement of the tool slide 144 actuated by the lever 148 through cams upon the cam disk 13'5. This movement carries the cutting off tool center of the stock, severing ther 1'41 b the bolt already formed, as illustratedin' and at the same time leaving a smooth on theend of the stock.

At or about the instant the cutting off tool passes over the center ofthe stock andsevers the completed bolt thererom, the cam disk 68 shifts the lever 69, throwing the high speed of the change speed mechanism and producing a hi lr speedupon the cam shaft. The high eed c utch of the mai'n spindle bein in the "gh speed of this spindle is maintaine until the threading 4die again comes into op' eration. When the cutting off tool has performed itswork the turning tools have completed their operation and as there are two tools spaced at a predetermined distance from each other the stock has been turned down'with the head 156 left between the tcols. As soon as the turning` ools 115'-116 reach the osition shown in ig. 20 and the cutting o to'ols start to retract the tools 115-,116 are alsomted b a movement of the slide 121. this 'de reaches its backward position the slide 126` is' moved ing the slide 119 and-turning toolsback ca to t eir initial position. ready to start a new sizing cut as soon as the slide 121 movesslide 41 has been moved bya cam on the cam drum 35 and the projection 40 hasmcomeinto engagement with the colla'r 3,8l and moved the feed tube backward ready for -a forward feed; ing movement. wie the cu ttiiig ufltool and turning' tools are being retracted the chuc g tu 28 is released and' as soon as the center rest slides are withdrawn from the stock the feed tube is forced forward by its slide 41 carrying the stock through the checking tube and positioning 1t adjacent to the tools read for a new cut. 'The o ration of the ma e has now been deseri c d for all normal positions. So long as tliere is a bar of stock in the feed tube the cycle of gperations will be repeated as above defined.

o prevent accidental operation, such for instance, as would occur when the stock is exl would be theresult.

The stop `motion device described and shown is not claimed herein as apart of the invention. This sto motion forms the subect matter of a divisional application filed a 6th, 1907, Serial No. 371,959.

at 4I claim as m invention and desire to secure by Letters atent is 1. In a metal wor machine to be driven from a countersha a main s indie mounted api-)lili and extending longitu inally of the mac e including stock feeding and chucking devices, a main driving shaft angularly arranged with resct to the main spindle and with its axial e crossing the axial line of th spindle, bevel gears between the angularly disposed driving shaft and the main s indle for driving the latter, and means or driving the main driving shaft.

2. In a metal working machine, in combination witha reciprocating actuating rack, a transversely reciprocating slide, a tool slide bearing arack and borne by said transversely reciprocating slide, and a pinion mounted appurtenant to said transversely reciprocatirifr slide and in mesh with the actuating racl and the rack of the tool slide. p

'Bi In a metalworking niachine,`in combination with a main spindle alaterally -movable slide a plu nnmber of jtocl spindles, meansA or reciprocating said slide, a pinion for separately reciprocating each of said -tool s indles'," means for rotat' the spindle, an meansY for ldcating said spindles to cause ltheir racks to accurately engage the pinion in the lateral movement of t c slide.

4. In a metal working machine, in combi-1 nation with a reciprocating slide, a earn wheel bearing two sets of cams for reciproeating the slide in o positcilirections, a segmental levcr engaging said slide at one end and having a trip for engaging one set of cams of the cam'wheel, and a pivoted. trip positively connected with the first nameii trip and arranged to be actuated by the second set of cams.

=5. In a metal workin machine comprising a main spindle, a later lv movable tool slide lbearing tool spindles and vmeans for reciprocatiii said toolispindles; a rack upon the tool u 'de ltransversely arrangedV to the line of the ,to spindles, a segment engaging said rack, a segmental gear engaging said'segment, a; cam disk provided Awith trips to en'- gage either the segment or segmental gear to move the slide in opposite directions, and connections intermediate said cam disk and sld'e for locking and releasing the slide in proper time relation to its jmovement.

6. In a metalworking machine in combination with -a reciprocating slide, a cam wheel beai'in two sets of camsfor reciprocating the sli e in opposite directions, asegmental lever engaging said slide at one end and having a trip for' engaging one set of cams of the cam wheel, a pivoted trip positively connected'with the first named trip and arranged to be actuated by the other set of cams, and a locking bolt controlled by the vcam wheel for locking and'releasing the reciprocating slide.

7 In a metal working machine in combination with a main spindloe a laterally movable slide, reciprocating t l spindles mounted on said slide 'and each provided with a rack, a stationary rack. operatively arranged with reference to said spindles, a movanble slide bearing a pinion, said pinion meshing with the stationary rack and arranged to engage the racks ofi the reciprocating tool spindles as the tool slide is moved laterally, means for moving the slide and spindlesj' a cam shaft and connections for moving the pinion slide. u

8. In a metal working machine in combination with a main spindle, a laterally movable slide, reciprocating tool spindles mounted on said slide and each provided with a rack, a stationary rack operatively arranged with reference to said spindles, a movalble slide bearing a pinion, said pinion meshing with the stationary rack and arranged to engage the racks of the reciprocating tool spindles as the tool slide is moved laterally, means for moving the slide and spindles, a cam shaft, connections for moving the pinion slide, and-,a locking device o eratively connected with said cam shaft or locking said slide at predetermined points of its transverse movement.

v 9. In a metal working machina-in combination with a main spindle adapted to feed up the stock, a tool s reducing said stock a tool slide bearing a tool for severin a ished iece,`means for operating said s ides, jaws or engaging the work between said tools, and means for opening and closing saidjaws.

-10. In a metal working machine, in coin-f bination with a main s indie adapted to hold and feed stock, a ool for operating Vrest support, and means for opening and ide bearingv a tool for` upon the stock, a support overlyin the spind e, a center rest support .depen ing therefrom, jaws mounted to slide in the center closin said jaws.

1I. n a metalworking machine, in combination with a main s indie adapted to hold and feed stock, a tool slide mounted on the base of the machine, means for reciprocating the tool slide, a suppprt overlying the main spindle, a center rest support depending from said support, sliding jaws mounted in the center rest support and connections between the tool slide and jaws for operating the latter.

, 12.l In a metal wor-king machine in combination with a main spindle adapted to hold the stock, a center rest comprising a fixed su o'rt, jaws movable in said support, a tool s ide and tool apxpurtenant to each jaw for operating upon t e stock and means 4for actuating the jaws of the center rest in their opening and closing movements dependent upon the movements of the tool slides.

13. In a metal working machine in combination with a main spindle adapted to hold the stock, a center rest comprising a fixed support, jaws movable in said support, a tool slide and tool having a movement transverse to the line of the spindle and operatively mounted with reference to one of said jaws, a tool slide and tool having movements transverse to and coincident with the line of the spindle and operatively mounted with reference to the second of said jaws, and means for actuating the jaws of the center rest in their opening and closing movements dependent upon the transverse movements of the tool slides.

14.- In a metal working machine in combination with amain spindle adapted to hold'the stock, a center rest comprising a` fixed support, jaws movable in said support, a tool slide and tool having a movement `transverse tothe line of the spindle and operatively mounted with jreference to one of said jaws, a tool slide and tool having movements transverse to and coincident with theline of the spindle and operatively mounted with reference to thc second of said jaws, and means for actuating the jaws of the center rest in their opening and closing movements de endeiit u on the transverse movements ol) the tool s ides and holding said jaws in closed position` during the longitudinal movement of the tool slide.

, 15. In a metal working machine in combination with a main spindle adapted to hold the stock, a center rest comprising a fixed support, jaws movable in said support, an adjustablefrack a purtenant to each of said jaws, segmenta rack levers meshin therewith, a tool slide operatively mounte with reference to each of said levers and a a A nomas cam ixponeach of said tool slides to engage` jawsmounted to slide in said support, tool the segmental levers, whereb the moveslides and automatic means co rating 1o ment of the jaws is controlledy y the movewith the tool slides for opening an closing ments of the tool slides. said center rest jaws.

5 16. In n metal working machine in com- ERNEST R. SEWARD. binntion with n. main spindle adapted to Witnesses: hold stock, u. support overl ing and fixed ARTHUR B. JEH-Kms,

with reference to the spin le, conter rest LENA E. BEBKWITCH. 

